6 x 5/16 MS21318 Military Round Head Type U Drive Screw Cadmium M20 It has a fine thread

It has a fine thread pitch of 28 threads per inch and a length of 1/2 inch

it features a hexagonal shape for easy tightening with a wrench

these screws feature a sharp point that easily penetrates drywall without the need for pre-drilling

while the 1 1/2"-6 thread size and 9" length provide ample holding power

These 8 x 1 5/8-inch Phillips bugle head Hi-Low drywall screws are designed for use in drywall applications

6 x 5/16 MS21318 Military Round Head Type U Drive Screw Cadmium M20 It has a fine threadThe 6 x 5 16 MS21318 Military Round Head Type U Drive Screw Cadmium is a high quality fastener designed for use in demanding military applications. It is made from cadmium plated steel for corrosion resistance and durability. The round head provides a flush finish, while the Type U drive allows for easy installation with a hex key. The screw has a length of 5 16 inches and a diameter of 6 inches. It meets the specifications of MS21318 and is commonly